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Round|Natural|GIA

1.51ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2527507448

Certificate GIA 2527507448

Diamond specifications and retailer prices

From $10,489 SGD
$8,205 USD
As of October 30, 2026
Save $8,754 SGD (45%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $19,244 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2527507448. Listed at 27 retailers as of October 30, 2026, with prices from $10,489 to $19,244, a $8,754 spread on the same certified stone. NZ Jewellers lists it at $19,244. 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

1.51
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2527507448
Dimensions7.28 × 7.33 × 4.57 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.28 mm7.33 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2527507448
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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: $11,009 SGD|Low: $9,174 SGD|High: $18,251 SGD|Avg: $13,421 SGD|+20.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 1$11,009 SGD
Retailer 7$11,545 SGD
Retailer 4$12,542 SGD
Retailer 6$12,692 SGD
Retailer 8$12,701 SGD
Retailer 2$13,810 SGD
Retailer 5$16,963 SGD
Retailer 3$18,033 SGD

40 data points across 8 retailers

27 retailers$10,489 SGD to $19,244 SGD

A
Cheapest Retailer
-
$10,489 SGD
$8,205 USD
A
Retailer 2
-
$10,811 SGD
$8,457 USD
View
A
Retailer 3
-
$11,009 SGD
$8,611 USD
View
B+
Retailer 4
-
$11,145 SGD
$8,718 USD
View
B+
Retailer 5
-
$11,454 SGD
$8,960 USD
View
B+
Retailer 6
-
$11,545 SGD
$9,031 USD
View
Final sale: no returns
B+
Retailer 7
-
$11,547 SGD
$9,032 USD
View
B+
Retailer 8
-
$12,311 SGD
$9,630 USD
View
Retailer 9
-
$12,509 SGD
$9,785 USD
View
Price last confirmed 51 days ago
B+
Retailer 10
-
$12,509 SGD
$9,785 USD
View
B+
Retailer 11
-
$12,542 SGD
£7,725 GBP
View
Retailer 12
-
$12,692 SGD
A$15,274 AUD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
$12,701 SGD
$9,935 USD
View
Retailer 14
-
$12,779 SGD
$9,996 USD
View
Price last confirmed 9 days ago
B+
Retailer 15
-
$12,843 SGD
$10,046 USD
View
B+
Retailer 16
-
$12,888 SGD
$10,082 USD
View
B+
Retailer 17
-
$13,372 SGD
$10,460 USD
View
B+
Retailer 18
-
$13,372 SGD
$10,460 USD
View
B+
Retailer 19
-
$13,810 SGD
€10,288 EUR
View
B+
Retailer 20
-
$13,820 SGD
$10,810 USD
View
B+
Retailer 21
-
$14,026 SGD
$10,971 USD
View
Retailer 22
-
$14,433 SGD
$11,290 USD
View
Price last confirmed 55 days ago
B+
Retailer 23
-
$14,433 SGD
$11,290 USD
View
B
Retailer 24
-
$16,963 SGD
ZAR 214,361 ZAR
View
B
Retailer 25
-
$18,033 SGD
£11,107 GBP
View
Retailer 26
-
$19,244 SGD
$15,053 USD
View
Price last confirmed 52 days ago
Most Expensive
B
NZ Jewellers
37a199b9-87a9-47ef-83b8-89bff342d19c · Oct 30
$19,244 SGD
$15,053 USD
View
26 more retailers have this diamond
Prices start from $10,489 SGDSave up to $8,754 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
$10,489 SGD