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Oval|Natural|GIA

0.75ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 5566600357

Certificate GIA 5566600357

Diamond specifications and retailer prices

From £687 GBP
As of November 4, 2026
Save £545 GBP (44%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,232 GBP at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 0.75ct natural oval diamond

This 0.75ct natural oval sits in the just-under-one-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 5566600357. Listed at 10 retailers as of November 4, 2026, with prices from £687 to £1,232, a £545 spread on the same certified stone. Helzberg Diamonds lists it at £1,232. 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

0.75
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5566600357
Dimensions6.91 × 5.05 × 3.26 mm
L/W Ratio1.37
Culet sizeNone
Top View
6.91 mm5.05 mm0.75 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5566600357
Side View
Table 62.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 64.6%

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: Nov 4
Current: £1,232 GBP|Low: £687 GBP|High: £1,232 GBP|Avg: £884 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8£687 GBP
Retailer 2£738 GBP
Retailer 4£749 GBP
Retailer 10£757 GBP
Retailer 9£855 GBP
Retailer 6£997 GBP
Retailer 7£1,048 GBP
Retailer 5£1,053 GBP
Retailer 3£1,124 GBP
Helzberg Diamonds£1,232 GBP

4 data points across 10 retailers

10 retailers£687 GBP to £1,232 GBP

A
Cheapest Retailer
-
£687 GBP
A
Retailer 2
-
£738 GBP
View
A
Retailer 3
-
£749 GBP
View
A
Retailer 4
-
£757 GBP
View
B+
Retailer 5
-
£855 GBP
View
B+
Retailer 6
-
£997 GBP
View
B+
Retailer 7
-
£1,048 GBP
View
B
Retailer 8
-
£1,053 GBP
View
B
Retailer 9
-
£1,124 GBP
View
Most Expensive
B
Helzberg Diamonds
XZRLLMMMGGJLN · Nov 6
£1,232 GBP
$1,649 USD
View
9 more retailers have this diamond
Prices start from £687 GBPSave up to £545 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
0.75ct Oval
£687 GBP