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Heart|Lab Grown|IGI

1.71ct D VS1 Heart Lab Grown Diamond

ID • D/VS1 • IGI LG728526423

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG728526423

Diamond specifications and retailer prices

From £169 GBP
$227 USD
As of October 23, 2026
Save £1,017 GBP (86%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,187 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.71ct lab-grown heart diamond

This 1.71ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG728526423 or 728526423. Listed at 23 retailers as of October 23, 2026, with prices from £169 to £1,187, a £1,017 spread on the same certified stone. Brilliant Earth lists it at £1,187. 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728526423
Dimensions8.33 × 7.79 × 4.69 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.33 mm7.79 mm1.71 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728526423
Side View
Table 62.0%Crown 34.3°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 56.3%

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 23
Current: £1,187 GBP|Low: £169 GBP|High: £1,254 GBP|Avg: £538 GBP|-5.4%
Brilliant Earth
Retailer 2
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Retailer 22
October 30, 2026
Retailer 3£169 GBP
Retailer 14£189 GBP
Retailer 21£196 GBP
Retailer 4£210 GBP
Retailer 17£234 GBP
Retailer 13£340 GBP
Retailer 20£355 GBP
Retailer 6£356 GBP
Retailer 18£389 GBP
Retailer 11£405 GBP
Retailer 9£478 GBP
Retailer 16£490 GBP
Retailer 5£551 GBP
Retailer 22£675 GBP
Retailer 15£682 GBP
Retailer 12£714 GBP
Retailer 19£843 GBP
Retailer 8£852 GBP
Retailer 10£855 GBP
Retailer 2£891 GBP
Retailer 7£955 GBP
Brilliant Earth£1,187 GBP

28 data points across 22 retailers

23 retailers£169 GBP to £1,187 GBP

A
Cheapest Retailer
-
£169 GBP
$227 USD
A
Retailer 2
-
£189 GBP
$253 USD
View
Final sale: no returns
A
Retailer 3
-
£196 GBP
$263 USD
View
A
Retailer 4
-
£210 GBP
$281 USD
View
A
Retailer 5
-
£234 GBP
View
A
Retailer 6
-
£239 GBP
HK$2,500 HKD
View
A
Retailer 7
-
£340 GBP
€434 EUR
View
Retailer 8
-
£355 GBP
ZAR 7,682 ZAR
View
Price last confirmed 7 days ago
B+
Retailer 9
-
£356 GBP
$477 USD
View
A
Retailer 10
-
£389 GBP
View
A
Retailer 11
-
£405 GBP
$542 USD
View
B+
Retailer 12
-
£478 GBP
$641 USD
View
B+
Retailer 13
-
£490 GBP
A$1,010 AUD
View
B+
Retailer 14
-
£551 GBP
$738 USD
View
B+
Retailer 15
-
£675 GBP
$904 USD
View
B+
Retailer 16
-
£682 GBP
SGD 1,234 SGD
View
B+
Retailer 17
-
£714 GBP
$956 USD
View
B+
Retailer 18
-
£843 GBP
View
B
Retailer 19
-
£852 GBP
$1,141 USD
View
B+
Retailer 20
-
£855 GBP
$1,145 USD
View
B
Retailer 21
-
£891 GBP
A$1,837 AUD
View
B
Retailer 22
-
£955 GBP
$1,279 USD
View
Most Expensive
B
Brilliant Earth
15575121A · Oct 28
£1,187 GBP
$1,590 USD
View
22 more retailers have this diamond
Prices start from £169 GBPSave up to £1,017 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 Heart
£169 GBP