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Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1559989727

Certificate GIA 1559989727

Diamond specifications and retailer prices

From HK$29,385 HKD
$3,745 USD
As of October 29, 2026
Save HK$26,827 HKD (48%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$56,212 HKD at NZ Jewellers · As of October 30, 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 1559989727. Listed at 10 retailers as of October 29, 2026, with prices from HK$29,385 to HK$56,212, a HK$26,827 spread on the same certified stone. NZ Jewellers lists it at HK$56,212. 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 angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1559989727
Dimensions6.51 × 6.54 × 4.08 mm
L/W Ratio1.00
Girdle conditionSlightly Thick
Key to symbols
Crystal, Feather, Needle
Top View
6.51 mm6.54 mm1.09 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559989727
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.6%

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 29
Current: HK$56,212 HKD|Low: HK$29,385 HKD|High: HK$56,212 HKD|Avg: HK$39,074 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 7HK$29,385 HKD
Retailer 9HK$30,719 HKD
Retailer 2HK$31,140 HKD
Retailer 5HK$32,264 HKD
Retailer 8HK$32,264 HKD
Retailer 6HK$33,386 HKD
Retailer 10HK$34,597 HKD
Retailer 3HK$36,384 HKD
Retailer 4HK$54,249 HKD
NZ JewellersHK$56,212 HKD

42 data points across 10 retailers

10 retailersHK$29,385 HKD to HK$56,212 HKD

B+
Cheapest Retailer
-
HK$29,385 HKD
$3,745 USD
B+
Retailer 2
-
HK$30,719 HKD
$3,915 USD
View
B+
Retailer 3
-
HK$31,140 HKD
£3,125 GBP
View
B+
Retailer 4
-
HK$32,264 HKD
$4,112 USD
View
B+
Retailer 5
-
HK$32,264 HKD
$4,112 USD
View
B+
Retailer 6
-
HK$33,386 HKD
$4,255 USD
View
Retailer 7
-
HK$34,597 HKD
A$6,783 AUD
View
Price last confirmed 26 days ago
B+
Retailer 8
-
HK$36,384 HKD
$4,637 USD
View
B
Retailer 9
-
HK$54,249 HKD
£5,444 GBP
View
Most Expensive
B
NZ Jewellers
7041e401-7015-401a-b08f-55c343acc911 · Oct 30
HK$56,212 HKD
$7,164 USD
View
9 more retailers have this diamond
Prices start from HK$29,385 HKDSave up to HK$26,827 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$29,385 HKD