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Heart|Lab Grown|IGI

1.51ct D SI1 Heart Lab Grown Diamond

ID • D/SI1 • IGI LG700570324

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG700570324

Diamond specifications and retailer prices

From €183 EUR
$204 USD
As of October 30, 2026
Save €927 EUR (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €1,110 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.51ct lab-grown heart diamond

This 1.51ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG700570324 or 700570324. Listed at 16 retailers as of October 30, 2026, with prices from €183 to €1,110, a €927 spread on the same certified stone. Brilliant Earth lists it at €1,110. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle41.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG700570324
Dimensions7.24 × 7.66 × 4.65 mm
L/W Ratio1.06
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.24 mm7.66 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG700570324
Side View
Table 58.0%Crown 36.8°Girdle: MED-STKPavilion 41.9°Culet: NoneDepth 60.7%

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 30
Current: €1,110 EUR|Low: €183 EUR|High: €1,110 EUR|Avg: €481 EUR
Brilliant Earth
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
Retailer 15
November 2, 2026
Retailer 14€183 EUR
Retailer 8€211 EUR
Retailer 7€213 EUR
Retailer 4€226 EUR
Retailer 6€236 EUR
Retailer 15€304 EUR
Retailer 10€376 EUR
Retailer 2€415 EUR
Retailer 3€442 EUR
Retailer 12€505 EUR
Retailer 13€522 EUR
Retailer 11€584 EUR
Retailer 5€726 EUR
Retailer 9€1,056 EUR
Brilliant Earth€1,110 EUR

45 data points across 15 retailers

16 retailers€183 EUR to €1,110 EUR

A
Cheapest Retailer
-
€183 EUR
$204 USD
A
Retailer 2
-
€211 EUR
$236 USD
View
A
Retailer 3
-
€213 EUR
$238 USD
View
Final sale: no returns
A
Retailer 4
-
€226 EUR
$252 USD
View
Retailer 5
-
€236 EUR
$264 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
€304 EUR
$340 USD
View
A
Retailer 7
-
€376 EUR
View
B+
Retailer 8
-
€415 EUR
£365 GBP
View
B+
Retailer 9
-
€442 EUR
$494 USD
View
B+
Retailer 10
-
€505 EUR
A$868 AUD
View
B+
Retailer 11
-
€522 EUR
$583 USD
View
Retailer 12
-
€553 EUR
$618 USD
View
Price last confirmed 23 days ago
B+
Retailer 13
-
€584 EUR
$652 USD
View
B
Retailer 14
-
€726 EUR
$811 USD
View
B
Retailer 15
-
€1,056 EUR
£929 GBP
View
Most Expensive
B
Brilliant Earth
13883714A · Oct 31
€1,110 EUR
$1,240 USD
View
15 more retailers have this diamond
Prices start from €183 EURSave up to €927 EUR

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
1.51ct Heart
€183 EUR