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Heart|Natural|GIA

0.64ct I SI1 Heart Natural Diamond

GD • I/SI1 • GIA 2536877635

Certificate GIA 2536877635

Diamond specifications and retailer prices

From $533 SGD
$417 USD
As of November 2, 2026
Save $166 SGD (24%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $700 SGD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 0.64ct natural heart diamond

This 0.64ct 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 2536877635. Listed at 4 retailers as of October 31, 2026, with prices from $533 to $700, a $166 spread on the same certified stone. Blue Nile lists it at $700. 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

0.64
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2536877635
Dimensions5.16 × 6.10 × 3.39 mm
L/W Ratio1.18
Top View
5.16 mm6.10 mm0.64 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2536877635
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 55.6%

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 2
Current: $700 SGD|Low: $499 SGD|High: $821 SGD|Avg: $638 SGD|-14.8%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 3$533 SGD
Retailer 4$577 SGD
Retailer 2$666 SGD
Blue Nile$700 SGD

39 data points across 4 retailers

4 retailers$533 SGD to $700 SGD

B+
Cheapest Retailer
-
$533 SGD
$417 USD
Final sale: no returns
A
Retailer 2
-
$577 SGD
View
B+
Retailer 3
-
$666 SGD
£410 GBP
View
Most Expensive
B+
Blue Nile
27287989 · Oct 31
$700 SGD
$547 USD
View
3 more retailers have this diamond
Prices start from $533 SGDSave up to $166 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
0.64ct Heart
$533 SGD