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Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6522850805

Certificate GIA 6522850805

Diamond specifications and retailer prices

From HK$30,567 HKD
$3,896 USD
As of October 30, 2026
Save HK$29,963 HKD (50%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$60,828 HKD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.09ct natural round diamond

This 1.09ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6522850805. Listed at 19 retailers as of October 30, 2026, with a 98% 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

1.09
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6522850805
Dimensions6.60 × 6.56 × 4.05 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
6.60 mm6.56 mm1.09 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6522850805
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.8%

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: Oct 30
Current: HK$35,322 HKD|Low: HK$29,539 HKD|High: HK$56,277 HKD|Avg: HK$36,374 HKD|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 10HK$30,567 HKD
Retailer 3HK$31,224 HKD
Retailer 5HK$31,461 HKD
Retailer 2HK$32,065 HKD
Retailer 12HK$32,913 HKD
Retailer 9HK$34,741 HKD
Retailer 1HK$35,322 HKD
Retailer 11HK$35,914 HKD
Retailer 13HK$36,025 HKD
Retailer 4HK$37,242 HKD
Retailer 8HK$39,159 HKD
Retailer 7HK$42,309 HKD
Retailer 6HK$55,639 HKD

44 data points across 13 retailers

19 retailersHK$30,567 HKD to HK$60,530 HKD

B+
Cheapest Retailer
-
HK$30,567 HKD
$3,896 USD
B+
Retailer 2
-
HK$31,224 HKD
SGD 5,378 SGD
View
Retailer 3
-
HK$31,461 HKD
$4,010 USD
View
Price last confirmed 23 days ago
B+
Retailer 4
-
HK$32,065 HKD
$4,087 USD
View
Final sale: no returns
B+
Retailer 5
-
HK$32,913 HKD
$4,195 USD
View
B+
Retailer 6
-
HK$34,741 HKD
$4,428 USD
View
B+
Retailer 7
-
HK$34,741 HKD
$4,428 USD
View
B+
Retailer 8
-
HK$34,741 HKD
$4,428 USD
View
Retailer 9
-
HK$34,913 HKD
$4,450 USD
View
Price last confirmed 31 days ago
B+
Retailer 10
-
HK$35,322 HKD
£3,545 GBP
View
B+
Retailer 11
-
HK$35,914 HKD
$4,578 USD
View
B+
Retailer 12
-
HK$36,025 HKD
$4,592 USD
View
Retailer 13
-
HK$37,242 HKD
A$7,303 AUD
View
Price last confirmed 20 days ago
B+
Retailer 14
-
HK$39,159 HKD
£3,930 GBP
View
Retailer 15
-
HK$40,288 HKD
$5,135 USD
View
Price last confirmed 30 days ago
B
Retailer 16
-
HK$42,309 HKD
ZAR 87,118 ZAR
View
B
Retailer 17
-
HK$55,639 HKD
£5,584 GBP
View
B
Retailer 18
-
HK$60,530 HKD
$7,715 USD
View
Most Expensive
NZ Jewellers
6b55c98d-cb82-4104-94c6-1c51bc4e06db · Sep 28
HK$60,828 HKD
$7,753 USD
View
Price last confirmed 32 days ago
18 more retailers have this diamond
Prices start from HK$30,567 HKDSave up to HK$29,963 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+
1.09ct Round
HK$30,567 HKD