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Heart|Natural|GIA

0.51ct I SI1 Heart Natural Diamond

GD • I/SI1 • GIA 1523399760

Certificate GIA 1523399760

Diamond specifications and retailer prices

From $455 SGD
As of November 6, 2026
Save $155 SGD (25%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $610 SGD at 77 Diamonds · As of November 7, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1523399760. Listed at 4 retailers as of November 6, 2026, with prices from $455 to $610, a $155 spread on the same certified stone. 77 Diamonds lists it at $610. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1523399760
Dimensions5.11 × 5.61 × 3.15 mm
L/W Ratio1.10
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
5.11 mm5.61 mm0.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1523399760
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 56.3%

Caratlytics Score

How it works →
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: Nov 6
Current: $610 SGD|Low: $409 SGD|High: $693 SGD|Avg: $544 SGD|-0.5%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 7, 2026
Retailer 2$455 SGD
Retailer 4$487 SGD
Retailer 3$607 SGD
77 Diamonds$610 SGD

42 data points across 4 retailers

4 retailers$455 SGD to $610 SGD

A
Cheapest Retailer
-
$455 SGD
Final sale: no returns
A
Retailer 2
-
$487 SGD
View
B+
Retailer 3
-
$607 SGD
View
Most Expensive
B+
77 Diamonds
HSCPYNZKXMED · Nov 7
$610 SGD
£375 GBP
View
3 more retailers have this diamond
Prices start from $455 SGDSave up to $155 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
$455 SGD