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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 HK$7,924 HKD
As of November 5, 2026
Save HK$1,867 HKD (19%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$21,472 HKD 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: HK$8,300 HKD|Low: HK$7,924 HKD|High: HK$10,144 HKD|Avg: HK$9,063 HKD|-4.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4HK$7,924 HKD
Retailer 1HK$8,300 HKD
Retailer 2HK$9,289 HKD
Retailer 3HK$9,791 HKD

40 data points across 4 retailers

9 retailersHK$7,924 HKD to HK$9,791 HKD

Retailer 1
-
HK$6,849 HKD
Price last confirmed 29 days ago
Retailer 2
-
HK$6,849 HKD
View
Price last confirmed 29 days ago
Retailer 3
-
HK$7,108 HKD
View
Price last confirmed 38 days ago
Retailer 4
-
HK$7,900 HKD
View
Price last confirmed 38 days ago
B+
Retailer 5
-
HK$7,924 HKD
View
B+
Retailer 6
-
HK$8,300 HKD
View
B+
Retailer 7
-
HK$9,289 HKD
View
B
Retailer 8
-
HK$9,791 HKD
View
Most Expensive
NZ Jewellers
70a3d954-3adc-4ed3-a454-dd9656884054 · Sep 28
HK$21,472 HKD
$2,737 USD
View
Price last confirmed 39 days ago
8 more retailers have this diamond
Prices start from HK$7,924 HKDSave up to HK$1,867 HKD

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
HK$7,924 HKD