CaratHunter
Plans
Round|Natural|IGI

1.55ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 668457801

Shape and cutting style on the report: Round brilliant

Certificate IGI 668457801

Diamond specifications and retailer prices

From $4,331 SGD
$3,388 USD
As of October 30, 2026
Save $4,170 SGD (49%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,501 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 668457801. Listed at 13 retailers as of October 30, 2026, with prices from $4,331 to $8,501, a $4,170 spread on the same certified stone. NZ Jewellers lists it at $8,501. 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

1.55
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33.4°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 668457801
Dimensions7.45 × 7.52 × 4.49 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.45 mm7.52 mm1.55 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 668457801
Side View
Table 58.0%Crown 33.4°Girdle: THN-STKPavilion 40.8°Culet: NoneDepth 59.9%

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 30
Current: $8,501 SGD|Low: $4,128 SGD|High: $8,501 SGD|Avg: $5,494 SGD
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
October 30, 2026
Retailer 11$4,225 SGD
Retailer 13$4,331 SGD
Retailer 5$4,361 SGD
Retailer 12$4,504 SGD
Retailer 4$4,880 SGD
Retailer 15$4,880 SGD
Retailer 7$5,067 SGD
Retailer 14$5,068 SGD
Retailer 2$5,294 SGD
Retailer 10$5,626 SGD
Retailer 3$5,630 SGD
Retailer 8$5,728 SGD
Retailer 6$5,807 SGD
Retailer 9$8,204 SGD
NZ Jewellers$8,501 SGD

39 data points across 15 retailers

13 retailers$4,331 SGD to $8,501 SGD

Retailer 1
-
$4,225 SGD
$3,305 USD
Price last confirmed 14 days ago
A
Retailer 2
-
$4,331 SGD
$3,388 USD
View
A
Retailer 3
-
$4,504 SGD
$3,523 USD
View
Final sale: no returns
A
Retailer 4
-
$4,880 SGD
$3,817 USD
View
A
Retailer 5
-
$4,880 SGD
$3,817 USD
View
A
Retailer 6
-
$5,067 SGD
$3,963 USD
View
A
Retailer 7
-
$5,068 SGD
$3,964 USD
View
A
Retailer 8
-
$5,294 SGD
£3,261 GBP
View
A
Retailer 9
-
$5,626 SGD
£3,465 GBP
View
B+
Retailer 10
-
$5,630 SGD
$4,404 USD
View
A
Retailer 11
-
$5,728 SGD
€4,267 EUR
View
B+
Retailer 12
-
$8,204 SGD
£5,053 GBP
View
Most Expensive
B
NZ Jewellers
e9cd51c0-6bd9-4603-b3f2-4a85b77b4a21 · Oct 30
$8,501 SGD
$6,650 USD
View
12 more retailers have this diamond
Prices start from $4,331 SGDSave up to $4,170 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.

A
1.55ct Round
$4,331 SGD