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Round|Natural|GIA

0.77ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1565680191

Certificate GIA 1565680191

Diamond specifications and retailer prices

From £917 GBP
$1,228 USD
As of October 31, 2026
Save £727 GBP (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,643 GBP at Helzberg Diamonds · As of October 31, 2026
View at Helzberg Diamonds

About this 0.77ct natural round diamond

This 0.77ct natural round sits in the just-under-one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1565680191. Listed at 13 retailers as of October 31, 2026, with prices from £917 to £1,643, a £727 spread on the same certified stone. Helzberg Diamonds lists it at £1,643. 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1565680191
Dimensions5.82 × 5.84 × 3.65 mm
L/W Ratio1.00
Culet sizeNone
Top View
5.82 mm5.84 mm0.77 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1565680191
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.7%

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: Oct 31
Current: £1,643 GBP|Low: £917 GBP|High: £1,643 GBP|Avg: £1,207 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 8£917 GBP
Retailer 6£933 GBP
Retailer 3£998 GBP
Retailer 4£1,035 GBP
Retailer 9£1,119 GBP
Retailer 2£1,150 GBP
Retailer 7£1,246 GBP
Retailer 11£1,292 GBP
Retailer 5£1,326 GBP
Retailer 10£1,477 GBP
Helzberg Diamonds£1,643 GBP

11 data points across 11 retailers

13 retailers£917 GBP to £1,643 GBP

A
Cheapest Retailer
-
£917 GBP
$1,228 USD
A
Retailer 2
-
£917 GBP
SGD 1,660 SGD
View
A
Retailer 3
-
£929 GBP
$1,245 USD
View
A
Retailer 4
-
£933 GBP
$1,250 USD
View
B+
Retailer 5
-
£998 GBP
SGD 1,807 SGD
View
B+
Retailer 6
-
£1,035 GBP
View
B+
Retailer 7
-
£1,119 GBP
$1,500 USD
View
B+
Retailer 8
-
£1,150 GBP
$1,541 USD
View
B+
Retailer 9
-
£1,246 GBP
View
B
Retailer 10
-
£1,292 GBP
$1,731 USD
View
B
Retailer 11
-
£1,326 GBP
€1,692 EUR
View
B
Retailer 12
-
£1,477 GBP
$1,979 USD
View
Most Expensive
B
Helzberg Diamonds
XZRHLMLMOGHPH · Oct 31
£1,643 GBP
$2,202 USD
View
12 more retailers have this diamond
Prices start from £917 GBPSave up to £727 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
£917 GBP