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Heart|Natural|GIA

0.66ct I SI1 Heart Natural Diamond

GD • I/SI1 • GIA 1529381706

Certificate GIA 1529381706

Diamond specifications and retailer prices

From €409 EUR
MYR 1,867 MYR
As of November 2, 2026
Save €115 EUR (22%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €524 EUR at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 0.66ct natural heart diamond

This 0.66ct 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 1529381706. Listed at 4 retailers as of November 2, 2026, with prices from €409 to €524, a €115 spread on the same certified stone. 77 Diamonds lists it at €524. 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

0.66
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1529381706
Dimensions5.52 × 6.04 × 3.44 mm
L/W Ratio1.09
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Feather
Top View
5.52 mm6.04 mm0.66 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1529381706
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 56.9%

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: €524 EUR|Low: €387 EUR|High: €583 EUR|Avg: €468 EUR|-8.5%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 2€409 EUR
Retailer 3€416 EUR
Retailer 4€453 EUR
77 Diamonds€524 EUR

41 data points across 4 retailers

4 retailers€409 EUR to €524 EUR

A
Cheapest Retailer
-
€409 EUR
MYR 1,867 MYR
A
Retailer 2
-
€416 EUR
$467 USD
View
Final sale: no returns
A
Retailer 3
-
€453 EUR
SGD 687 SGD
View
Most Expensive
B+
77 Diamonds
HSCP5WQQ5ZGW · Nov 2
€524 EUR
£462 GBP
View
3 more retailers have this diamond
Prices start from €409 EURSave up to €115 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.

A
0.66ct Heart
€409 EUR