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Round|Lab Grown|IGI

1.71ct D VVS1 Round Lab Grown Diamond

ID • D/VVS1 • IGI LG770636520

Shape and cutting style on the report: Round brilliant

Certificate IGI LG770636520

Diamond specifications and retailer prices

From £223 GBP
$299 USD
As of October 29, 2026
Save £904 GBP (80%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: £1,243 GBP at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 1.71ct lab-grown round diamond

This 1.71ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG770636520 or 770636520. Listed at 27 retailers as of October 29, 2026, with a 405% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.71
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770636520
Dimensions7.60 × 7.66 × 4.73 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.60 mm7.66 mm1.71 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770636520
Side View
Table 59.0%Crown 35.4°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £1,243 GBP|Low: £214 GBP|High: £1,258 GBP|Avg: £618 GBP|-1.2%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 16
Retailer 17
October 30, 2026
Retailer 7£223 GBP
Retailer 4£259 GBP
Retailer 5£277 GBP
Retailer 17£277 GBP
Retailer 2£386 GBP
Retailer 15£392 GBP
Retailer 12£452 GBP
Retailer 14£476 GBP
Retailer 10£490 GBP
Retailer 13£499 GBP
Retailer 3£650 GBP
Retailer 16£715 GBP
Retailer 6£890 GBP
Retailer 8£972 GBP
Retailer 11£1,116 GBP
Retailer 9£1,142 GBP
Rare Carat£1,243 GBP

32 data points across 17 retailers

27 retailers£223 GBP to £1,127 GBP

A
Cheapest Retailer
-
£223 GBP
$299 USD
A
Retailer 2
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£250 GBP
$335 USD
View
Final sale: no returns
A
Retailer 3
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£259 GBP
$347 USD
View
A
Retailer 4
-
£277 GBP
$371 USD
View
Retailer 5
-
£277 GBP
$371 USD
View
Price last confirmed 11 days ago
A
Retailer 6
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£277 GBP
$371 USD
View
A
Retailer 7
-
£306 GBP
HK$3,200 HKD
View
B+
Retailer 8
-
£373 GBP
$500 USD
View
A
Retailer 9
-
£386 GBP
View
A
Retailer 10
-
£392 GBP
$525 USD
View
A
Retailer 11
-
£452 GBP
€577 EUR
View
A
Retailer 12
-
£476 GBP
ZAR 10,295 ZAR
View
A
Retailer 13
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£476 GBP
$638 USD
View
B+
Retailer 14
-
£490 GBP
View
B+
Retailer 15
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£499 GBP
A$1,028 AUD
View
B+
Retailer 16
-
£578 GBP
$774 USD
View
B+
Retailer 17
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£650 GBP
A$1,339 AUD
View
B+
Retailer 18
-
£715 GBP
$958 USD
View
B
Retailer 19
-
£890 GBP
$1,192 USD
View
B
Retailer 20
-
£890 GBP
SGD 1,611 SGD
View
B
Retailer 21
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£925 GBP
$1,240 USD
View
B
Retailer 22
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£972 GBP
$1,303 USD
View
B
Retailer 23
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£1,064 GBP
$1,426 USD
View
B
Retailer 24
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£1,116 GBP
View
B
Retailer 25
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£1,127 GBP
$1,510 USD
View
Retailer 26
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£1,142 GBP
A$2,354 AUD
View
Price last confirmed 29 days ago
Most Expensive
Rare Carat
225206365VB770 · Oct 21
£1,243 GBP
$1,665 USD
View
Price last confirmed 9 days ago
26 more retailers have this diamond
Prices start from £223 GBPSave up to £904 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.71ct Round
£223 GBP