Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6522850805

Certificate GIA 6522850805

Diamond specifications and retailer prices

From $4,981 SGD
$3,896 USD
As of October 30, 2026
Save $4,882 SGD (50%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,911 SGD 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: $9,863 SGD|Low: $4,813 SGD|High: $9,911 SGD|Avg: $6,171 SGD|-0.5%
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 30, 2026
Retailer 13$4,981 SGD
Retailer 6$5,088 SGD
Retailer 8$5,126 SGD
Retailer 5$5,225 SGD
Retailer 15$5,363 SGD
Retailer 4$5,661 SGD
Retailer 12$5,661 SGD
Retailer 16$5,661 SGD
Retailer 2$5,755 SGD
Retailer 14$5,852 SGD
Retailer 3$5,870 SGD
Retailer 7$6,068 SGD
Retailer 11$6,381 SGD
Retailer 10$6,894 SGD
Retailer 9$9,066 SGD
NZ Jewellers$9,863 SGD

43 data points across 16 retailers

19 retailers$4,981 SGD to $9,863 SGD

B+
Cheapest Retailer
-
$4,981 SGD
$3,896 USD
B+
Retailer 2
-
$5,088 SGD
View
Retailer 3
-
$5,126 SGD
$4,010 USD
View
Price last confirmed 24 days ago
B+
Retailer 4
-
$5,225 SGD
$4,087 USD
View
Final sale: no returns
B+
Retailer 5
-
$5,363 SGD
$4,195 USD
View
B+
Retailer 6
-
$5,661 SGD
$4,428 USD
View
B+
Retailer 7
-
$5,661 SGD
$4,428 USD
View
B+
Retailer 8
-
$5,661 SGD
$4,428 USD
View
Retailer 9
-
$5,689 SGD
$4,450 USD
View
Price last confirmed 32 days ago
B+
Retailer 10
-
$5,755 SGD
£3,545 GBP
View
B+
Retailer 11
-
$5,852 SGD
$4,578 USD
View
B+
Retailer 12
-
$5,870 SGD
$4,592 USD
View
Retailer 13
-
$6,068 SGD
A$7,303 AUD
View
Price last confirmed 21 days ago
B+
Retailer 14
-
$6,381 SGD
£3,930 GBP
View
Retailer 15
-
$6,565 SGD
$5,135 USD
View
Price last confirmed 32 days ago
B
Retailer 16
-
$6,894 SGD
ZAR 87,118 ZAR
View
B
Retailer 17
-
$9,066 SGD
£5,584 GBP
View
B
Retailer 18
-
$9,863 SGD
$7,715 USD
View
Most Expensive
NZ Jewellers
6b55c98d-cb82-4104-94c6-1c51bc4e06db · Sep 28
$9,911 SGD
$7,753 USD
View
Price last confirmed 33 days ago
18 more retailers have this diamond
Prices start from $4,981 SGDSave up to $4,882 SGD

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
$4,981 SGD