Oval|Natural|GIA

0.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 3495166566

Certificate GIA 3495166566

Diamond specifications and retailer prices

From £518 GBP
As of November 6, 2026
Save £618 GBP (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £1,946 GBP at NZ Jewellers · As of November 5, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3495166566. Listed at 20 retailers as of November 2, 2026, with a 119% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3495166566
Dimensions6.30 × 4.55 × 2.82 mm
L/W Ratio1.38
Top View
6.30 mm4.55 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 3495166566
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.9%

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: Nov 6
Current: £735 GBP|Low: £517 GBP|High: £1,151 GBP|Avg: £724 GBP|+3.5%
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
November 6, 2026
Retailer 7£517 GBP
Retailer 2£518 GBP
Retailer 12£560 GBP
Retailer 11£571 GBP
Retailer 5£574 GBP
Retailer 4£584 GBP
Retailer 13£691 GBP
Retailer 8£713 GBP
Retailer 1£735 GBP
Retailer 10£876 GBP
Retailer 3£933 GBP
Retailer 6£958 GBP
Retailer 9£1,136 GBP

44 data points across 13 retailers

20 retailers£518 GBP to £1,136 GBP

Retailer 1
-
£516 GBP
Price last confirmed 9 days ago
B+
Retailer 2
-
£518 GBP
View
Final sale: no returns
B+
Retailer 3
-
£560 GBP
View
Retailer 4
-
£563 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£563 GBP
View
B+
Retailer 6
-
£571 GBP
View
B+
Retailer 7
-
£574 GBP
View
B+
Retailer 8
-
£584 GBP
View
B+
Retailer 9
-
£648 GBP
View
B
Retailer 10
-
£691 GBP
View
B
Retailer 11
-
£713 GBP
View
B
Retailer 12
-
£735 GBP
View
B
Retailer 13
-
£851 GBP
View
B
Retailer 14
-
£871 GBP
View
B
Retailer 15
-
£876 GBP
View
Retailer 16
-
£933 GBP
View
Price last confirmed 32 days ago
B
Retailer 17
-
£958 GBP
View
B
Retailer 18
-
£998 GBP
View
B
Retailer 19
-
£1,136 GBP
View
Most Expensive
NZ Jewellers
6fb2c97c-0dc9-4bdf-bb29-cdbbde57e802 · Nov 5
£1,946 GBP
$2,605 USD
View
Price under review
19 more retailers have this diamond
Prices start from £518 GBPSave up to £618 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.

B+
0.51ct Oval
£518 GBP