CaratHunter
Plans
Heart|Natural|GIA

0.51ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 7536277818

Certificate GIA 7536277818

Diamond specifications and retailer prices

From $686 SGD
As of November 6, 2026
Save $236 SGD (26%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $922 SGD at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 0.51ct natural heart diamond

This 0.51ct natural 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 7536277818. Listed at 4 retailers as of November 6, 2026, with prices from $686 to $922, a $236 spread on the same certified stone. 77 Diamonds lists it at $922. 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7536277818
Dimensions4.98 × 5.75 × 3.16 mm
L/W Ratio1.15
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
4.98 mm5.75 mm0.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7536277818
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 55.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $922 SGD|Low: $592 SGD|High: $936 SGD|Avg: $762 SGD|+5.4%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 5$656 SGD
Retailer 2$686 SGD
Retailer 4$736 SGD
Retailer 3$833 SGD
77 Diamonds$922 SGD

35 data points across 5 retailers

4 retailers$686 SGD to $922 SGD

A
Cheapest Retailer
-
$686 SGD
Final sale: no returns
Retailer 2
-
$736 SGD
View
Price last confirmed 12 days ago
Retailer 3
-
$833 SGD
View
Price last confirmed 13 days ago
Most Expensive
B+
77 Diamonds
HSCPZHY4HKVJ · Nov 6
$922 SGD
£566 GBP
View
3 more retailers have this diamond
Prices start from $686 SGDSave up to $236 SGD

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
0.51ct Heart
$686 SGD