CaratHunter
Plans
Round|Natural|GIA

0.85ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 2506747178

Shape and cutting style on the report: Round brilliant

Certificate GIA 2506747178

Diamond specifications and retailer prices

From $1,443 AUD
As of November 5, 2026
Save $340 AUD (19%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $3,910 AUD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 0.85ct natural round diamond

This 0.85ct natural round sits in the just-under-one-carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2506747178. Listed at 9 retailers as of November 5, 2026, with a relatively tight 24% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

0.85
Carat
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2506747178
Dimensions6.01 × 6.05 × 3.79 mm
L/W Ratio1.01
Star length45%
Lower girdle75%
Top View
6.01 mm6.05 mm0.85 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2506747178
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,511 AUD|Low: $1,443 AUD|High: $1,847 AUD|Avg: $1,650 AUD|-4.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4$1,443 AUD
Retailer 1$1,511 AUD
Retailer 2$1,691 AUD
Retailer 3$1,783 AUD

40 data points across 4 retailers

9 retailers$1,443 AUD to $1,783 AUD

Retailer 1
-
$1,247 AUD
Price last confirmed 29 days ago
Retailer 2
-
$1,247 AUD
View
Price last confirmed 29 days ago
Retailer 3
-
$1,294 AUD
View
Price last confirmed 38 days ago
Retailer 4
-
$1,438 AUD
View
Price last confirmed 38 days ago
B+
Retailer 5
-
$1,443 AUD
View
B+
Retailer 6
-
$1,511 AUD
View
B+
Retailer 7
-
$1,691 AUD
View
B
Retailer 8
-
$1,783 AUD
View
Most Expensive
NZ Jewellers
70a3d954-3adc-4ed3-a454-dd9656884054 · Sep 28
$3,910 AUD
$2,737 USD
View
Price last confirmed 39 days ago
8 more retailers have this diamond
Prices start from $1,443 AUDSave up to $340 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.

B+
0.85ct Round
$1,443 AUD