Round|Natural|GIA

0.77ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6522377060

Certificate GIA 6522377060

Diamond specifications and retailer prices

From £687 GBP
$920 USD
As of October 26, 2026
Save £182 GBP (21%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £2,115 GBP at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6522377060. Listed at 7 retailers as of October 26, 2026, with a 26% 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

0.77
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6522377060
Dimensions5.87 × 5.84 × 3.63 mm
L/W Ratio1.01
Star length50%
Top View
5.87 mm5.84 mm0.77 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6522377060
Side View
Table 57.0%Crown 34°Girdle: MED-THKPavilion 41°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
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 26
Current: £868 GBP|Low: £519 GBP|High: £1,249 GBP|Avg: £825 GBP|+6.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 7£519 GBP
Retailer 8£675 GBP
Retailer 2£687 GBP
Retailer 9£687 GBP
Retailer 3£758 GBP
Retailer 1£868 GBP
Retailer 6£981 GBP
Retailer 4£1,003 GBP
Retailer 5£1,249 GBP

24 data points across 9 retailers

7 retailers£687 GBP to £868 GBP

Retailer 1
-
£675 GBP
$904 USD
Price last confirmed 33 days ago
A
Retailer 2
-
£687 GBP
$920 USD
View
Retailer 3
-
£778 GBP
$1,043 USD
View
Price last confirmed 32 days ago
A
Retailer 4
-
£868 GBP
€1,108 EUR
View
Retailer 5
-
£981 GBP
ZAR 21,237 ZAR
View
Price last confirmed 37 days ago
Retailer 6
-
£1,003 GBP
A$2,067 AUD
View
Price last confirmed 33 days ago
Most Expensive
NZ Jewellers
edc8d291-fec4-440d-96ac-5f61269fe955 · Sep 26
£2,115 GBP
$2,834 USD
View
Price last confirmed 35 days ago
6 more retailers have this diamond
Prices start from £687 GBPSave up to £182 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
£687 GBP