Round|Natural|GIA

0.80ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2506352705

Certificate GIA 2506352705

Diamond specifications and retailer prices

From HK$7,336 HKD
$935 USD
As of October 31, 2026
Save HK$14,389 HKD (66%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$22,078 HKD at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 0.8ct natural round diamond

This 0.8ct natural round sits in the just-under-one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2506352705. Listed at 21 retailers as of October 27, 2026, with a 196% 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

0.80
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2506352705
Dimensions5.92 × 5.88 × 3.68 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.92 mm5.88 mm0.80 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2506352705
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.5%

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: HK$21,725 HKD|Low: HK$7,336 HKD|High: HK$22,078 HKD|Avg: HK$10,887 HKD|-1.6%
NZ Jewellers
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
Retailer 15
Retailer 16
October 31, 2026
Retailer 16HK$7,336 HKD
Retailer 7HK$8,064 HKD
Retailer 6HK$8,222 HKD
Retailer 3HK$8,528 HKD
Retailer 10HK$8,905 HKD
Retailer 13HK$8,905 HKD
Retailer 5HK$9,250 HKD
Retailer 15HK$9,925 HKD
Retailer 14HK$9,961 HKD
Retailer 2HK$10,016 HKD
Retailer 12HK$10,512 HKD
Retailer 4HK$11,213 HKD
Retailer 8HK$11,834 HKD
Retailer 9HK$13,175 HKD
Retailer 11HK$16,341 HKD
NZ JewellersHK$21,725 HKD

43 data points across 16 retailers

21 retailersHK$7,336 HKD to HK$21,725 HKD

A
Cheapest Retailer
-
HK$7,336 HKD
$935 USD
A
Retailer 2
-
HK$8,064 HKD
SGD 1,389 SGD
View
A
Retailer 3
-
HK$8,222 HKD
$1,048 USD
View
Final sale: no returns
B+
Retailer 4
-
HK$8,528 HKD
$1,087 USD
View
B+
Retailer 5
-
HK$8,905 HKD
$1,135 USD
View
B+
Retailer 6
-
HK$8,905 HKD
$1,135 USD
View
Retailer 7
-
HK$9,054 HKD
$1,154 USD
View
Price last confirmed 54 days ago
Retailer 8
-
HK$9,054 HKD
$1,154 USD
View
Price last confirmed 33 days ago
B+
Retailer 9
-
HK$9,250 HKD
$1,179 USD
View
B+
Retailer 10
-
HK$9,925 HKD
$1,265 USD
View
B+
Retailer 11
-
HK$9,961 HKD
$1,270 USD
View
B+
Retailer 12
-
HK$10,016 HKD
£1,005 GBP
View
Retailer 13
-
HK$10,443 HKD
$1,331 USD
View
Price last confirmed 55 days ago
Retailer 14
-
HK$10,443 HKD
$1,331 USD
View
Price last confirmed 32 days ago
B+
Retailer 15
-
HK$10,512 HKD
£1,055 GBP
View
B
Retailer 16
-
HK$11,213 HKD
$1,429 USD
View
Retailer 17
-
HK$11,834 HKD
A$2,320 AUD
View
Price last confirmed 27 days ago
B
Retailer 18
-
HK$13,175 HKD
ZAR 27,129 ZAR
View
B
Retailer 19
-
HK$16,341 HKD
£1,640 GBP
View
B
Retailer 20
-
HK$21,725 HKD
$2,769 USD
View
Most Expensive
NZ Jewellers
682f0d6b-1b18-40a0-9382-996856cd1e15 · Sep 26
HK$22,078 HKD
$2,814 USD
View
Price last confirmed 35 days ago
20 more retailers have this diamond
Prices start from HK$7,336 HKDSave up to HK$14,389 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.

A
0.80ct Round
HK$7,336 HKD