CaratHunter
Plans
Heart|Natural|GIA

0.51ct I SI1 Heart Natural Diamond

GD • I/SI1 • GIA 6522551062

Certificate GIA 6522551062

Diamond specifications and retailer prices

From $628 NZD
As of November 6, 2026
Save $207 NZD (25%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $835 NZD at 77 Diamonds · As of November 6, 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 6522551062. Listed at 3 retailers as of November 6, 2026, with prices from $628 to $835, a $207 spread on the same certified stone. 77 Diamonds lists it at $835. 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
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6522551062
Dimensions4.78 × 5.62 × 3.34 mm
L/W Ratio1.18
Top View
4.78 mm5.62 mm0.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6522551062
Side View
Table 58.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.5%

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 6
Current: $835 NZD|Low: $568 NZD|High: $863 NZD|Avg: $718 NZD|-1.4%
77 Diamonds
Retailer 2
Retailer 3
November 6, 2026
Retailer 3$628 NZD
Retailer 2$667 NZD
77 Diamonds$835 NZD

41 data points across 3 retailers

3 retailers$628 NZD to $835 NZD

A
Cheapest Retailer
-
$628 NZD
Final sale: no returns
B+
Retailer 2
-
$667 NZD
View
Most Expensive
B+
77 Diamonds
HSCPW23QBKF8 · Nov 6
$835 NZD
£364 GBP
View
2 more retailers have this diamond
Prices start from $628 NZDSave up to $207 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
$628 NZD