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Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

VG • I/SI1 • GIA 1549280379

Certificate GIA 1549280379

Diamond specifications and retailer prices

From $4,834 SGD
$3,781 USD
As of October 31, 2026
Save $6,216 SGD (56%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $11,049 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 1549280379. Listed at 24 retailers as of October 30, 2026, with prices from $4,834 to $11,049, a $6,216 spread on the same certified stone. NZ Jewellers lists it at $11,049. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 1549280379
Dimensions7.16 × 7.10 × 4.60 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.16 mm7.10 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1549280379
Side View
Table 55.0%Crown 38.5°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 64.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $11,049 SGD|Low: $4,772 SGD|High: $11,049 SGD|Avg: $6,605 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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 2, 2026
Retailer 6$4,834 SGD
Retailer 21$4,942 SGD
Retailer 22$5,116 SGD
Retailer 23$5,221 SGD
Retailer 8$5,258 SGD
Retailer 12$5,525 SGD
Retailer 11$5,651 SGD
Retailer 3$5,663 SGD
Retailer 9$5,985 SGD
Retailer 14$5,985 SGD
Retailer 16$5,985 SGD
Retailer 4$6,418 SGD
Retailer 5$6,418 SGD
Retailer 2$6,553 SGD
Retailer 24$6,622 SGD
Retailer 17$6,701 SGD
Retailer 18$6,795 SGD
Retailer 15$6,906 SGD
Retailer 13$7,028 SGD
Retailer 7$7,292 SGD
Retailer 10$7,687 SGD
Retailer 20$8,121 SGD
Retailer 19$10,522 SGD
NZ Jewellers$11,049 SGD

25 data points across 24 retailers

24 retailers$4,834 SGD to $11,049 SGD

A
Cheapest Retailer
-
$4,834 SGD
$3,781 USD
A
Retailer 2
-
$4,942 SGD
HK$30,200 HKD
View
A
Retailer 3
-
$5,116 SGD
$4,002 USD
View
A
Retailer 4
-
$5,221 SGD
$4,084 USD
View
A
Retailer 5
-
$5,258 SGD
$4,113 USD
View
B+
Retailer 6
-
$5,525 SGD
$4,322 USD
View
Final sale: no returns
A
Retailer 7
-
$5,651 SGD
$4,420 USD
View
A
Retailer 8
-
$5,663 SGD
$4,430 USD
View
B+
Retailer 9
-
$5,985 SGD
$4,682 USD
View
A
Retailer 10
-
$5,985 SGD
$4,682 USD
View
A
Retailer 11
-
$5,985 SGD
$4,682 USD
View
B+
Retailer 12
-
$6,418 SGD
$5,020 USD
View
A
Retailer 13
-
$6,418 SGD
$5,020 USD
View
A
Retailer 14
-
$6,553 SGD
£4,036 GBP
View
A
Retailer 15
-
$6,622 SGD
$5,180 USD
View
Retailer 16
-
$6,701 SGD
A$8,064 AUD
View
Price last confirmed 23 days ago
B+
Retailer 17
-
$6,795 SGD
£4,185 GBP
View
B+
Retailer 18
-
$6,906 SGD
$5,402 USD
View
B+
Retailer 19
-
$7,028 SGD
€5,236 EUR
View
Retailer 20
-
$7,292 SGD
$5,704 USD
View
Price last confirmed 10 days ago
B+
Retailer 21
-
$7,687 SGD
$6,013 USD
View
B+
Retailer 22
-
$8,121 SGD
ZAR 102,624 ZAR
View
B
Retailer 23
-
$10,522 SGD
£6,481 GBP
View
Most Expensive
B
NZ Jewellers
3e2f5f46-1ce4-4305-949f-1309faa1ab4c · Oct 30
$11,049 SGD
$8,643 USD
View
23 more retailers have this diamond
Prices start from $4,834 SGDSave up to $6,216 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
1.51ct Round
$4,834 SGD