Heart|Natural|GIA

0.51ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 6525804276

Certificate GIA 6525804276

Diamond specifications and retailer prices

From $524 USD
As of November 1, 2026
Save $268 USD (34%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,788 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6525804276. Listed at 16 retailers as of October 31, 2026, with a 51% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
F
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6525804276
Dimensions4.76 × 5.49 × 3.34 mm
L/W Ratio1.15
Top View
4.76 mm5.49 mm0.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6525804276
Side View
Table 61.0%CrownGirdlePavilionCulet: NoneDepth 61.0%

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: $1,788 USD|Low: $420 USD|High: $1,788 USD|Avg: $785 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 1, 2026
Retailer 10$423 USD
Retailer 2$524 USD
Retailer 4$526 USD
Retailer 5$570 USD
Retailer 3$614 USD
Retailer 14$614 USD
Retailer 6$658 USD
Retailer 8$699 USD
Retailer 11$702 USD
Retailer 12$714 USD
Retailer 15$765 USD
Retailer 7$857 USD
Retailer 9$880 USD
Retailer 13$1,318 USD
NZ Jewellers$1,788 USD

29 data points across 15 retailers

16 retailers$524 USD to $792 USD

Retailer 1
-
$423 USD
Price last confirmed 8 days ago
B+
Retailer 2
-
$524 USD
View
Retailer 3
-
$570 USD
View
Price last confirmed 9 days ago
Retailer 4
-
$614 USD
View
Price last confirmed 9 days ago
Retailer 5
-
$614 USD
View
Price last confirmed 9 days ago
B
Retailer 6
-
$658 USD
View
Retailer 7
-
$658 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$699 USD
View
Retailer 9
-
$702 USD
View
Price last confirmed 8 days ago
Retailer 10
-
$714 USD
View
Price last confirmed 8 days ago
Retailer 11
-
$765 USD
View
Price last confirmed 5 days ago
B
Retailer 12
-
$792 USD
View
Retailer 13
-
$857 USD
View
Price last confirmed 34 days ago
Retailer 14
-
$880 USD
View
Price last confirmed 8 days ago
Retailer 15
-
$1,318 USD
View
Price last confirmed 13 days ago
Most Expensive
NZ Jewellers
83a05a61-9849-4b5b-bd93-f7104d6a2321 · Oct 30
$1,788 USD
View
Price under review
15 more retailers have this diamond
Prices start from $524 USDSave up to $268 USD

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
$524 USD