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Round|Lab Grown|IGI

1.28ct D VVS1 Round Lab Grown Diamond

ID • D/VVS1 • IGI LG816607508

Shape and cutting style on the report: Round brilliant

Certificate IGI LG816607508

Diamond specifications and retailer prices

From £166 GBP
$221 USD
As of October 29, 2026
Save £1,513 GBP (90%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,678 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG816607508 or 816607508. Listed at 23 retailers as of October 27, 2026, with prices from £166 to £1,678, a £1,513 spread on the same certified stone. Queensmith lists it at £1,678. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816607508
Dimensions6.90 × 6.94 × 4.33 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
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
6.90 mm6.94 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816607508
Side View
Table 57.0%Crown 34.8°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
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: £1,678 GBP|Low: £166 GBP|High: £1,678 GBP|Avg: £510 GBP
Queensmith
Retailer 2
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October 30, 2026
Retailer 4£166 GBP
Retailer 14£186 GBP
Retailer 8£193 GBP
Retailer 5£206 GBP
Retailer 23£206 GBP
Retailer 3£231 GBP
Retailer 10£278 GBP
Retailer 2£328 GBP
Retailer 17£341 GBP
Retailer 18£354 GBP
Retailer 13£382 GBP
Retailer 9£390 GBP
Retailer 7£395 GBP
Retailer 19£504 GBP
Retailer 22£620 GBP
Retailer 6£662 GBP
Retailer 21£665 GBP
Retailer 15£668 GBP
Retailer 12£702 GBP
Retailer 16£710 GBP
Retailer 20£827 GBP
Retailer 11£947 GBP
Queensmith£1,678 GBP

23 data points across 23 retailers

23 retailers£166 GBP to £1,678 GBP

A
Cheapest Retailer
-
£166 GBP
$221 USD
A
Retailer 2
-
£186 GBP
$248 USD
View
Final sale: no returns
A
Retailer 3
-
£193 GBP
$257 USD
View
A
Retailer 4
-
£206 GBP
$274 USD
View
A
Retailer 5
-
£206 GBP
$274 USD
View
A
Retailer 6
-
£231 GBP
HK$2,400 HKD
View
B+
Retailer 7
-
£278 GBP
$370 USD
View
A
Retailer 8
-
£328 GBP
View
A
Retailer 9
-
£341 GBP
€432 EUR
View
A
Retailer 10
-
£354 GBP
ZAR 7,614 ZAR
View
A
Retailer 11
-
£382 GBP
View
B+
Retailer 12
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£390 GBP
$519 USD
View
B+
Retailer 13
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£395 GBP
$526 USD
View
B+
Retailer 14
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£504 GBP
A$1,032 AUD
View
Retailer 15
-
£620 GBP
$825 USD
View
Price last confirmed 16 days ago
B
Retailer 16
-
£662 GBP
$882 USD
View
B
Retailer 17
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£665 GBP
$885 USD
View
B
Retailer 18
-
£668 GBP
SGD 1,202 SGD
View
B
Retailer 19
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£702 GBP
$935 USD
View
B
Retailer 20
-
£710 GBP
$945 USD
View
B+
Retailer 21
-
£827 GBP
View
B
Retailer 22
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£947 GBP
$1,261 USD
View
Most Expensive
B
Queensmith
LG816607508 · Oct 27
£1,678 GBP
View
22 more retailers have this diamond
Prices start from £166 GBPSave up to £1,513 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
1.28ct Round
£166 GBP