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Round|Natural|GIA

0.77ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6565524370

Certificate GIA 6565524370

Diamond specifications and retailer prices

From $1,748 AUD
$1,228 USD
As of October 31, 2026
Save $1,386 AUD (44%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,135 AUD at Helzberg Diamonds · As of November 1, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6565524370. Listed at 15 retailers as of October 31, 2026, with prices from $1,748 to $3,135, a $1,386 spread on the same certified stone. Helzberg Diamonds lists it at $3,135. 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
FluorescenceNone
Crown angle34.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6565524370
Dimensions5.85 × 5.89 × 3.61 mm
L/W Ratio1.01
Culet sizeNone
Top View
5.85 mm5.89 mm0.77 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565524370
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.5%

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: $3,135 AUD|Low: $1,748 AUD|High: $3,135 AUD|Avg: $2,242 AUD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 2, 2026
Retailer 13$1,748 AUD
Retailer 9$1,772 AUD
Retailer 4$1,780 AUD
Retailer 12$1,851 AUD
Retailer 5$1,904 AUD
Retailer 2$1,974 AUD
Retailer 10$2,135 AUD
Retailer 7$2,194 AUD
Retailer 14$2,377 AUD
Retailer 6$2,464 AUD
Retailer 8$2,511 AUD
Retailer 11$2,665 AUD
Retailer 3$2,817 AUD
Helzberg Diamonds$3,135 AUD

16 data points across 14 retailers

15 retailers$1,748 AUD to $3,135 AUD

A
Cheapest Retailer
-
$1,748 AUD
$1,228 USD
A
Retailer 2
-
$1,772 AUD
$1,245 USD
View
A
Retailer 3
-
$1,780 AUD
$1,250 USD
View
A
Retailer 4
-
$1,851 AUD
$1,300 USD
View
A
Retailer 5
-
$1,870 AUD
SGD 1,775 SGD
View
B+
Retailer 6
-
$1,904 AUD
SGD 1,807 SGD
View
B+
Retailer 7
-
$1,974 AUD
£1,092 GBP
View
B+
Retailer 8
-
$2,135 AUD
$1,500 USD
View
B+
Retailer 9
-
$2,194 AUD
$1,541 USD
View
B+
Retailer 10
-
$2,377 AUD
£1,315 GBP
View
B
Retailer 11
-
$2,464 AUD
$1,731 USD
View
B+
Retailer 12
-
$2,511 AUD
€1,680 EUR
View
B+
Retailer 13
-
$2,665 AUD
$1,872 USD
View
B
Retailer 14
-
$2,817 AUD
$1,979 USD
View
Most Expensive
B
Helzberg Diamonds
XZRMLMLLIKJNG · Nov 1
$3,135 AUD
$2,202 USD
View
14 more retailers have this diamond
Prices start from $1,748 AUDSave up to $1,386 AUD

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
$1,748 AUD