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0.77ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 1558526165

Certificate GIA 1558526165

Diamond specifications and retailer prices

From £438 GBP
As of November 5, 2026
Save £372 GBP (46%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £811 GBP at Frank Darling · As of November 6, 2026
View at Frank Darling

About this 0.77ct natural round diamond

This 0.77ct natural round sits in the just-under-one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1558526165. Listed at 8 retailers as of November 5, 2026, with prices from £438 to £811, a £372 spread on the same certified stone. Frank Darling lists it at £811. 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

0.77
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1558526165
Dimensions5.82 × 3.65 × 3.65 mm
L/W Ratio1.59
Culet sizeNone
Top View
5.82 mm3.65 mm0.77 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558526165
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.4%

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 5
Current: £811 GBP|Low: £435 GBP|High: £861 GBP|Avg: £681 GBP|-5.9%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3£438 GBP
Retailer 6£497 GBP
Retailer 8£566 GBP
Retailer 5£646 GBP
Retailer 4£675 GBP
Retailer 2£688 GBP
Retailer 7£753 GBP
Frank Darling£811 GBP
Retailer 9£853 GBP

31 data points across 9 retailers

8 retailers£438 GBP to £811 GBP

A
Cheapest Retailer
-
£438 GBP
A
Retailer 2
-
£497 GBP
View
A
Retailer 3
-
£646 GBP
View
A
Retailer 4
-
£646 GBP
View
A
Retailer 5
-
£675 GBP
View
A
Retailer 6
-
£688 GBP
View
A
Retailer 7
-
£753 GBP
View
Most Expensive
A
Frank Darling
2654723HK · Nov 6
£811 GBP
$1,091 USD
View
7 more retailers have this diamond
Prices start from £438 GBPSave up to £372 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
0.77ct Round
£438 GBP