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Heart|Natural|GIA

0.51ct G SI1 Heart Natural Diamond

GD • G/SI1 • GIA 6521419341

Certificate GIA 6521419341

Diamond specifications and retailer prices

From $741 NZD
As of November 6, 2026
Save $206 NZD (22%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $947 NZD at 77 Diamonds · As of November 7, 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 G 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 6521419341. Listed at 4 retailers as of November 6, 2026, with prices from $741 to $947, a $206 spread on the same certified stone. 77 Diamonds lists it at $947. 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
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6521419341
Dimensions4.96 × 5.48 × 3.26 mm
L/W Ratio1.10
Top View
4.96 mm5.48 mm0.51 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6521419341
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $947 NZD|Low: $705 NZD|High: $1,092 NZD|Avg: $856 NZD|-11.6%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 7, 2026
Retailer 2$741 NZD
Retailer 3$767 NZD
Retailer 4$832 NZD
77 Diamonds$947 NZD

42 data points across 4 retailers

4 retailers$741 NZD to $947 NZD

A
Cheapest Retailer
-
$741 NZD
A
Retailer 2
-
$767 NZD
View
Final sale: no returns
B+
Retailer 3
-
$832 NZD
View
Most Expensive
B+
77 Diamonds
HSCP44YWNYN7 · Nov 7
$947 NZD
£413 GBP
View
3 more retailers have this diamond
Prices start from $741 NZDSave up to $206 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
$741 NZD