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Heart|Natural|GIA

0.51ct I SI1 Heart Natural Diamond

GD • I/SI1 • GIA 2526408275

Certificate GIA 2526408275

Diamond specifications and retailer prices

From $657 NZD
As of November 2, 2026
Save $194 NZD (23%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $851 NZD 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 SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2526408275. Listed at 3 retailers as of November 2, 2026, with prices from $657 to $851, a $194 spread on the same certified stone. 77 Diamonds lists it at $851. 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 2526408275
Dimensions5.12 × 5.64 × 3.22 mm
L/W Ratio1.10
Top View
5.12 mm5.64 mm0.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2526408275
Side View
Table 56.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 57.2%

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: $851 NZD|Low: $617 NZD|High: $947 NZD|Avg: $750 NZD|-8.4%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 2$657 NZD
Retailer 3$685 NZD
Retailer 4$732 NZD
77 Diamonds$851 NZD

35 data points across 4 retailers

3 retailers$657 NZD to $851 NZD

A
Cheapest Retailer
-
$657 NZD
B+
Retailer 2
-
$732 NZD
View
Most Expensive
B+
77 Diamonds
HSCPHHHZCCQF · Nov 2
$851 NZD
£371 GBP
View
2 more retailers have this diamond
Prices start from $657 NZDSave up to $194 NZD

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
$657 NZD