CaratHunter
Plans
Round|Natural|GIA

0.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 7508375094

Certificate GIA 7508375094

Diamond specifications and retailer prices

From $642 USD
₹61,169 INR
As of October 31, 2026
Save $2,059 USD (76%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,701 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7508375094. Listed at 22 retailers as of October 30, 2026, with prices from $642 to $2,701, a $2,059 spread on the same certified stone. NZ Jewellers lists it at $2,701. 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
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 7508375094
Dimensions5.24 × 5.21 × 3.10 mm
L/W Ratio1.01
Star length45%
Lower girdle75%
Key to symbols
Crystal
Top View
5.24 mm5.21 mm0.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7508375094
Side View
Table 60.0%Crown 32.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.3%

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: Oct 31
Current: $2,701 USD|Low: $641 USD|High: $2,701 USD|Avg: $1,328 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 6$642 USD
Retailer 11$668 USD
Retailer 8$850 USD
Retailer 5$1,001 USD
Retailer 10$1,025 USD
Retailer 2$1,114 USD
Retailer 3$1,295 USD
Retailer 7$1,330 USD
Retailer 4$1,577 USD
Retailer 9$2,038 USD
NZ Jewellers$2,701 USD

32 data points across 11 retailers

22 retailers$642 USD to $2,701 USD

A
Cheapest Retailer
-
$642 USD
₹61,169 INR
A
Retailer 2
-
$668 USD
View
Final sale: no returns
A
Retailer 3
-
$769 USD
View
B+
Retailer 4
-
$850 USD
View
Retailer 5
-
$861 USD
View
Price last confirmed 37 days ago
B+
Retailer 6
-
$861 USD
View
B+
Retailer 7
-
$861 USD
View
B+
Retailer 8
-
$893 USD
SGD 1,207 SGD
View
B+
Retailer 9
-
$895 USD
View
B+
Retailer 10
-
$992 USD
View
Retailer 11
-
$994 USD
View
Price last confirmed 40 days ago
B+
Retailer 12
-
$994 USD
View
B+
Retailer 13
-
$1,001 USD
£788 GBP
View
B+
Retailer 14
-
$1,025 USD
View
B+
Retailer 15
-
$1,114 USD
€1,061 EUR
View
B+
Retailer 16
-
$1,146 USD
View
Retailer 17
-
$1,295 USD
A$1,993 AUD
View
Price last confirmed 27 days ago
B+
Retailer 18
-
$1,330 USD
ZAR 21,482 ZAR
View
B
Retailer 19
-
$1,577 USD
£1,242 GBP
View
B
Retailer 20
-
$1,888 USD
£1,487 GBP
View
B
Retailer 21
-
$2,038 USD
£1,605 GBP
View
Most Expensive
B
NZ Jewellers
f266f9c6-4012-4e18-82c2-692075b4d4b4 · Oct 30
$2,701 USD
View
21 more retailers have this diamond
Prices start from $642 USDSave up to $2,059 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.

A
0.51ct Round
$642 USD