CaratHunter
Plans
Heart|Natural|GIA

0.51ct G SI2 Heart Natural Diamond

VG • G/SI2 • GIA 7563442465

Certificate GIA 7563442465

Diamond specifications and retailer prices

From $595 NZD
As of November 4, 2026
Save $2,134 NZD (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,001 NZD at Queensmith · As of October 27, 2026
View at Queensmith

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 SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7563442465. Listed at 11 retailers as of November 4, 2026, with a 358% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7563442465
Dimensions5.60 × 4.89 × 3.25 mm
L/W Ratio1.15
Top View
5.60 mm4.89 mm0.51 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7563442465
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.0%

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 4
Current: $3,001 NZD|Low: $595 NZD|High: $3,024 NZD|Avg: $1,422 NZD|+2.3%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11$595 NZD
Retailer 8$767 NZD
Retailer 2$844 NZD
Retailer 9$891 NZD
Retailer 5$920 NZD
Retailer 10$947 NZD
Retailer 3$1,057 NZD
Retailer 4$1,283 NZD
Retailer 6$1,642 NZD
Retailer 7$2,729 NZD
Queensmith$3,001 NZD

29 data points across 11 retailers

11 retailers$595 NZD to $2,729 NZD

A
Cheapest Retailer
-
$595 NZD
A
Retailer 2
-
$767 NZD
View
A
Retailer 3
-
$844 NZD
View
A
Retailer 4
-
$891 NZD
View
B+
Retailer 5
-
$920 NZD
View
B+
Retailer 6
-
$947 NZD
View
B+
Retailer 7
-
$1,057 NZD
View
B
Retailer 8
-
$1,283 NZD
View
B
Retailer 9
-
$1,642 NZD
View
B
Retailer 10
-
$2,729 NZD
View
Most Expensive
Queensmith
7563442465 · Oct 27
$3,001 NZD
£1,310 GBP
View
Price under review
10 more retailers have this diamond
Prices start from $595 NZDSave up to $2,134 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
$595 NZD