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Heart|Lab Grown|GIA

0.51ct D SI1 Heart Lab Grown Diamond

EX • D/SI1 • GIA 6551182341

Certificate GIA 6551182341

Diamond specifications and retailer prices

From $753 CAD
$539 USD
As of October 29, 2026
Save $506 CAD (40%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,888 CAD at MOH London · As of October 26, 2026
View at MOH London

About this 0.51ct lab-grown heart diamond

This 0.51ct lab-grown heart sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551182341. Listed at 10 retailers as of October 29, 2026, with a 67% 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

0.51
Carat
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginLab Grown
Grading LabGIA
CertificateGIA 6551182341
Dimensions4.79 × 5.45 × 3.33 mm
L/W Ratio1.14
Top View
4.79 mm5.45 mm0.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6551182341
Side View
Table 59.0%CrownGirdlePavilionCulet: NDepth 61.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $1,888 CAD|Low: $753 CAD|High: $4,389 CAD|Avg: $1,509 CAD|-57.0%
MOH London
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
October 30, 2026
Retailer 13$753 CAD
Retailer 12$777 CAD
Retailer 3$793 CAD
Retailer 14$890 CAD
Retailer 6$985 CAD
Retailer 15$985 CAD
Retailer 9$1,001 CAD
Retailer 8$1,005 CAD
Retailer 10$1,022 CAD
Retailer 11$1,083 CAD
Retailer 2$1,259 CAD
Retailer 7$1,333 CAD
Retailer 5$1,517 CAD
MOH London$1,888 CAD
Retailer 4$2,590 CAD

42 data points across 15 retailers

10 retailers$753 CAD to $1,259 CAD

B
Cheapest Retailer
-
$753 CAD
$539 USD
Final sale: no returns
B
Retailer 2
-
$777 CAD
$556 USD
View
Retailer 3
-
$985 CAD
$705 USD
View
Price last confirmed 18 days ago
B
Retailer 4
-
$1,001 CAD
£564 GBP
View
B
Retailer 5
-
$1,005 CAD
£566 GBP
View
B
Retailer 6
-
$1,022 CAD
£576 GBP
View
B
Retailer 7
-
$1,083 CAD
$775 USD
View
B
Retailer 8
-
$1,259 CAD
ZAR 14,565 ZAR
View
Retailer 9
-
$1,517 CAD
$1,086 USD
View
Price last confirmed 8 days ago
Most Expensive
MOH London
B2444F0CD · Oct 26
$1,888 CAD
£1,064 GBP
View
Price under review
9 more retailers have this diamond
Prices start from $753 CADSave up to $506 CAD

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
0.51ct Heart
$753 CAD