CaratHunter
Plans
Heart|Lab Grown|IGI

0.81ct D SI1 Heart Lab Grown Diamond

EX • D/SI1 • IGI LG825602512

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG825602512

Diamond specifications and retailer prices

From €389 EUR
$435 USD
As of November 1, 2026
Save €759 EUR (66%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €1,386 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 0.81ct lab-grown heart diamond

This 0.81ct lab-grown heart sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG825602512 or 825602512. Listed at 5 retailers as of November 1, 2026, with a 195% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.81
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.1°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825602512
Dimensions5.66 × 6.51 × 3.67 mm
L/W Ratio1.15
Girdle conditionFaceted
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
5.66 mm6.51 mm0.81 ctD / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG825602512
Side View
Table 64.0%Crown 36.1°Girdle: MED-STKPavilion 38.2°Culet: NoneDepth 56.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €1,148 EUR|Low: €246 EUR|High: €1,386 EUR|Avg: €677 EUR
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Taylor and Hart
November 1, 2026
Retailer 5€246 EUR
Retailer 3€389 EUR
Retailer 4€412 EUR
Retailer 2€547 EUR
Retailer 1€1,148 EUR
Taylor and Hart€1,386 EUR

40 data points across 6 retailers

5 retailers€389 EUR to €1,148 EUR

B+
Cheapest Retailer
-
€389 EUR
$435 USD
B
Retailer 2
-
€412 EUR
HK$3,600 HKD
View
B
Retailer 3
-
€547 EUR
£481 GBP
View
B
Retailer 4
-
€1,148 EUR
£1,010 GBP
View
Most Expensive
Taylor and Hart
LPDT8CJ · Oct 31
€1,386 EUR
$1,548 USD
View
Price under review
4 more retailers have this diamond
Prices start from €389 EURSave up to €759 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.

B+
0.81ct Heart
€389 EUR