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0.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 7508653245

Certificate GIA 7508653245

Diamond specifications and retailer prices

From $987 USD
As of October 31, 2026
Save $1,893 USD (66%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,880 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 7508653245. Listed at 21 retailers as of October 30, 2026, with prices from $987 to $2,880, a $1,893 spread on the same certified stone. NZ Jewellers lists it at $2,880. 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°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 7508653245
Dimensions5.19 × 5.23 × 3.12 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal
Top View
5.19 mm5.23 mm0.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7508653245
Side View
Table 59.0%Crown 32°Girdle: MED-STKPavilion 41°Culet: NoneDepth 59.9%

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: Oct 31
Current: $1,526 USD|Low: $823 USD|High: $2,188 USD|Avg: $1,394 USD|+2.5%
Retailer 1
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 12$987 USD
Retailer 4$1,027 USD
Retailer 15$1,043 USD
Retailer 14$1,111 USD
Retailer 11$1,210 USD
Retailer 7$1,234 USD
Retailer 6$1,290 USD
Retailer 3$1,333 USD
Retailer 9$1,339 USD
Retailer 5$1,517 USD
Retailer 1$1,526 USD
Retailer 13$1,544 USD
Retailer 10$1,823 USD
Retailer 2$1,920 USD
Retailer 8$2,163 USD

43 data points across 15 retailers

21 retailers$987 USD to $2,880 USD

B+
Cheapest Retailer
-
$987 USD
Final sale: no returns
B+
Retailer 2
-
$1,025 USD
View
B+
Retailer 3
-
$1,027 USD
View
B+
Retailer 4
-
$1,043 USD
View
B+
Retailer 5
-
$1,070 USD
View
B+
Retailer 6
-
$1,111 USD
View
B+
Retailer 7
-
$1,210 USD
View
B+
Retailer 8
-
$1,234 USD
View
B
Retailer 9
-
$1,290 USD
View
B
Retailer 10
-
$1,290 USD
View
B
Retailer 11
-
$1,333 USD
View
B
Retailer 12
-
$1,339 USD
£1,055 GBP
View
B
Retailer 13
-
$1,340 USD
View
B
Retailer 14
-
$1,517 USD
View
B
Retailer 15
-
$1,526 USD
€1,453 EUR
View
Retailer 16
-
$1,544 USD
A$2,375 AUD
View
Price last confirmed 28 days ago
B
Retailer 17
-
$1,823 USD
ZAR 29,443 ZAR
View
B
Retailer 18
-
$1,920 USD
CA$2,667 CAD
View
B
Retailer 19
-
$2,163 USD
£1,703 GBP
View
B
Retailer 20
-
$2,297 USD
£1,809 GBP
View
Most Expensive
B
NZ Jewellers
39453ea5-011b-4abe-86ad-91f527eb7e0f · Oct 30
$2,880 USD
View
20 more retailers have this diamond
Prices start from $987 USDSave up to $1,893 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 Round
$987 USD