Oval|Natural|GIA

0.51ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 5513838565

Certificate GIA 5513838565

Diamond specifications and retailer prices

From £510 GBP
$683 USD
As of October 25, 2026
Save £522 GBP (51%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,655 GBP at NZ Jewellers · As of September 24, 2026
View at NZ Jewellers

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded D 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 5513838565. Listed at 22 retailers as of October 25, 2026, with a 102% 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5513838565
Dimensions6.79 × 4.38 × 2.76 mm
L/W Ratio1.55
Top View
6.79 mm4.38 mm0.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5513838565
Side View
Table 60.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 62.9%

Caratlytics Score

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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: Oct 25
Current: £646 GBP|Low: £368 GBP|High: £1,234 GBP|Avg: £650 GBP|+29.1%
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
Retailer 16
October 25, 2026
Retailer 5£442 GBP
Retailer 15£474 GBP
Retailer 13£500 GBP
Retailer 9£510 GBP
Retailer 4£590 GBP
Retailer 7£590 GBP
Retailer 3£591 GBP
Retailer 2£598 GBP
Retailer 6£612 GBP
Retailer 11£640 GBP
Retailer 1£646 GBP
Retailer 10£691 GBP
Retailer 14£716 GBP
Retailer 8£794 GBP
Retailer 16£867 GBP
Retailer 12£1,031 GBP

36 data points across 16 retailers

22 retailers£510 GBP to £1,031 GBP

Retailer 1
-
£468 GBP
$627 USD
Price last confirmed 19 days ago
Retailer 2
-
£474 GBP
$635 USD
View
Price last confirmed 10 days ago
Retailer 3
-
£478 GBP
$641 USD
View
Price last confirmed 36 days ago
Retailer 4
-
£500 GBP
$670 USD
View
Price last confirmed 7 days ago
Retailer 5
-
£504 GBP
$675 USD
View
Price last confirmed 19 days ago
A
Retailer 6
-
£510 GBP
$683 USD
View
Retailer 7
-
£515 GBP
$690 USD
View
Price last confirmed 31 days ago
Retailer 8
-
£552 GBP
$739 USD
View
Price last confirmed 38 days ago
Retailer 9
-
£590 GBP
$790 USD
View
Price last confirmed 9 days ago
Retailer 10
-
£590 GBP
$790 USD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
£591 GBP
$791 USD
View
Retailer 12
-
£598 GBP
$801 USD
View
Price last confirmed 12 days ago
Retailer 13
-
£612 GBP
$820 USD
View
Price last confirmed 10 days ago
B+
Retailer 14
-
£640 GBP
View
Retailer 15
-
£646 GBP
$865 USD
View
Price last confirmed 6 days ago
B+
Retailer 16
-
£691 GBP
View
Retailer 17
-
£716 GBP
€914 EUR
View
Price last confirmed 8 days ago
Retailer 18
-
£794 GBP
A$1,637 AUD
View
Price last confirmed 27 days ago
Retailer 19
-
£867 GBP
ZAR 18,765 ZAR
View
Price last confirmed 15 days ago
B
Retailer 20
-
£1,031 GBP
View
Retailer 21
-
£1,620 GBP
$2,170 USD
View
Price last confirmed 20 days ago
Most Expensive
NZ Jewellers
3c4b9d2d-e3e9-4b11-b453-b825d03f9e27 · Sep 24
£1,655 GBP
$2,218 USD
View
Price last confirmed 36 days ago
21 more retailers have this diamond
Prices start from £510 GBPSave up to £522 GBP

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 Oval
£510 GBP