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Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1538904520

Certificate GIA 1538904520

Diamond specifications and retailer prices

From $8,093 USD
Save $7,332 USD (48%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $15,425 USD at NZ Jewellers
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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1538904520. Listed at 23 retailers, with prices from $8,093 to $15,425 at NZ Jewellers, a $7,332 spread on the same certified stone. 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
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1538904520
Dimensions7.31 × 7.26 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
7.31 mm7.26 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1538904520
Side View
Table 57.0%Crown 34.5°Girdle: Sli. ThickPavilion 41.4°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Sep 29
Current: $15,425 USD|Low: $7,402 USD|High: $15,766 USD|Avg: $10,542 USD|-2.2%
NZ Jewellers
Retailer 2
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Retailer 26
October 1, 2026
Retailer 19$7,402 USD
Retailer 15$8,093 USD
Retailer 10$8,230 USD
Retailer 3$8,270 USD
Retailer 7$8,324 USD
Retailer 23$8,633 USD
Retailer 14$8,707 USD
Retailer 11$9,175 USD
Retailer 6$9,255 USD
Retailer 8$9,680 USD
Retailer 12$10,026 USD
Retailer 24$10,180 USD
Retailer 2$10,232 USD
Retailer 22$10,242 USD
Retailer 5$10,298 USD
Retailer 4$10,890 USD
Retailer 21$10,913 USD
Retailer 18$10,950 USD
Retailer 17$11,286 USD
Retailer 20$11,521 USD
Retailer 26$11,569 USD
Retailer 9$11,964 USD
Retailer 16$12,180 USD
Retailer 13$13,344 USD
Retailer 25$14,628 USD
NZ Jewellers$15,425 USD

11 data points across 26 retailers

23 retailers$8,093 USD to $15,425 USD

A
Cheapest Retailer
-
$8,093 USD
A
Retailer 2
-
$8,230 USD
HK$64,300 HKD
View
A
Retailer 3
-
$8,270 USD
View
A
Retailer 4
-
$8,324 USD
View
A
Retailer 5
-
$8,633 USD
View
B+
Retailer 6
-
$8,707 USD
View
B+
Retailer 7
-
$9,175 USD
View
B+
Retailer 8
-
$9,255 USD
View
B+
Retailer 9
-
$9,680 USD
View
B+
Retailer 10
-
$10,026 USD
View
B+
Retailer 11
-
$10,180 USD
View
B+
Retailer 12
-
$10,232 USD
A$15,741 AUD
View
B+
Retailer 13
-
$10,242 USD
£8,065 GBP
View
B+
Retailer 14
-
$10,298 USD
View
B+
Retailer 15
-
$10,890 USD
View
B+
Retailer 16
-
$10,913 USD
€10,393 EUR
View
B+
Retailer 17
-
$11,521 USD
£9,071 GBP
View
B+
Retailer 18
-
$11,569 USD
View
B+
Retailer 19
-
$11,964 USD
View
B+
Retailer 20
-
$12,180 USD
View
B
Retailer 21
-
$13,344 USD
ZAR 215,566 ZAR
View
B
Retailer 22
-
$14,628 USD
£11,518 GBP
View
Most Expensive
B
NZ Jewellers
02c63f2b-ddb7-4ac2-8ebd-2141d1ef2b1a · Sep 26
$15,425 USD
View
22 more retailers have this diamond
Prices start from $8,093 USDSave up to $7,332 USD

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.

A
1.51ct Round
$8,093 USD