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Round|Natural|GIA

1.20ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2504814178

Certificate GIA 2504814178

Diamond specifications and retailer prices

From $3,914 SGD
$3,062 USD
As of October 30, 2026
Save $4,915 SGD (56%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $8,830 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2504814178. Listed at 22 retailers as of October 30, 2026, with prices from $3,914 to $8,830, a $4,915 spread on the same certified stone. NZ Jewellers lists it at $8,830. 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

1.20
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2504814178
Dimensions6.87 × 6.85 × 4.18 mm
L/W Ratio1.00
Star length55%
Lower girdle75%
Top View
6.87 mm6.85 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2504814178
Side View
Table 60.0%Crown 32°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.0%

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: $6,230 SGD|Low: $3,663 SGD|High: $8,577 SGD|Avg: $5,387 SGD|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 9$3,914 SGD
Retailer 6$4,237 SGD
Retailer 5$4,312 SGD
Retailer 8$4,768 SGD
Retailer 2$5,152 SGD
Retailer 7$5,429 SGD
Retailer 3$5,607 SGD
Retailer 1$6,230 SGD
Retailer 4$8,520 SGD

41 data points across 9 retailers

22 retailers$3,914 SGD to $8,830 SGD

B+
Cheapest Retailer
-
$3,914 SGD
$3,062 USD
B+
Retailer 2
-
$3,960 SGD
$3,098 USD
View
B+
Retailer 3
-
$4,077 SGD
$3,189 USD
View
B+
Retailer 4
-
$4,215 SGD
A$5,073 AUD
View
B+
Retailer 5
-
$4,237 SGD
$3,314 USD
View
Final sale: no returns
B+
Retailer 6
-
$4,312 SGD
$3,373 USD
View
B+
Retailer 7
-
$4,410 SGD
$3,450 USD
View
B+
Retailer 8
-
$4,591 SGD
$3,591 USD
View
B+
Retailer 9
-
$4,591 SGD
$3,591 USD
View
B+
Retailer 10
-
$4,597 SGD
$3,596 USD
View
B
Retailer 11
-
$4,768 SGD
$3,730 USD
View
B+
Retailer 12
-
$5,126 SGD
$4,010 USD
View
B+
Retailer 13
-
$5,126 SGD
$4,010 USD
View
B+
Retailer 14
-
$5,152 SGD
£3,173 GBP
View
B
Retailer 15
-
$5,293 SGD
$4,140 USD
View
B
Retailer 16
-
$5,298 SGD
$4,144 USD
View
Retailer 17
-
$5,429 SGD
A$6,533 AUD
View
Price last confirmed 23 days ago
B
Retailer 18
-
$5,607 SGD
€4,177 EUR
View
Retailer 19
-
$5,737 SGD
$4,488 USD
View
Price last confirmed 8 days ago
B
Retailer 20
-
$6,230 SGD
ZAR 78,722 ZAR
View
B
Retailer 21
-
$8,520 SGD
£5,248 GBP
View
Most Expensive
B
NZ Jewellers
08346862-4419-48e2-ab77-6760ed94a92f · Oct 30
$8,830 SGD
$6,907 USD
View
21 more retailers have this diamond
Prices start from $3,914 SGDSave up to $4,915 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+
1.20ct Round
$3,914 SGD