CaratHunter
Plans
Heart|Natural|GIA

0.51ct I SI2 Heart Natural Diamond

GD • I/SI2 • GIA 7566242820

Certificate GIA 7566242820

Diamond specifications and retailer prices

From €360 EUR
SGD 545 SGD
As of November 1, 2026
Save €58 EUR (14%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €418 EUR at 77 Diamonds · As of November 2, 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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7566242820. Listed at 2 retailers as of November 1, 2026, with prices from €360 to €418, a €58 spread on the same certified stone. 77 Diamonds lists it at €418. 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
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7566242820
Dimensions5.12 × 5.53 × 3.00 mm
L/W Ratio1.08
Culet sizeNone
Key to symbols
Twinning Wisp
Top View
5.12 mm5.53 mm0.51 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7566242820
Side View
Table 56.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 54.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €418 EUR|Low: €360 EUR|High: €431 EUR|Avg: €410 EUR|-0.3%
77 Diamonds
Retailer 2
November 2, 2026
Retailer 2€360 EUR
77 Diamonds€418 EUR

32 data points across 2 retailers

2 retailers€360 EUR to €418 EUR

B+
Cheapest Retailer
-
€360 EUR
SGD 545 SGD
Most Expensive
B+
77 Diamonds
HSCPSM8HMXF4 · Nov 2
€418 EUR
£369 GBP
View
1 more retailer has this diamond
Prices start from €360 EURSave up to €58 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.

B+
0.51ct Heart
€360 EUR