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Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

GD • I/SI1 • GIA 1377240735

Certificate GIA 1377240735

Diamond specifications and retailer prices

From $6,677 NZD
HK$29,400 HKD
As of November 1, 2026
Save $8,376 NZD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $15,053 NZD 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 standard cut grade and certified by GIA 1377240735. Listed at 18 retailers as of October 30, 2026, with prices from $6,677 to $15,053, a $8,376 spread on the same certified stone. NZ Jewellers lists it at $15,053. 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
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1377240735
Dimensions7.04 × 6.95 × 4.65 mm
L/W Ratio1.01
Key to symbols
Twinning Wisp, Feather
Top View
7.04 mm6.95 mm1.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1377240735
Side View
Table 57.0%CrownGirdle: ThickPavilionCulet: NoneDepth 66.5%

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: Nov 1
Current: $15,053 NZD|Low: $5,882 NZD|High: $15,053 NZD|Avg: $8,723 NZD|+9.0%
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
November 2, 2026
Retailer 15$6,677 NZD
Retailer 6$7,684 NZD
Retailer 4$7,850 NZD
Retailer 17$7,970 NZD
Retailer 5$8,305 NZD
Retailer 7$8,463 NZD
Retailer 10$8,490 NZD
Retailer 11$8,819 NZD
Retailer 3$8,999 NZD
Retailer 8$8,999 NZD
Retailer 9$8,999 NZD
Retailer 2$9,256 NZD
Retailer 18$9,270 NZD
Retailer 12$10,140 NZD
Retailer 16$10,385 NZD
Retailer 14$11,063 NZD
Retailer 13$14,334 NZD
NZ Jewellers$15,053 NZD

27 data points across 18 retailers

18 retailers$6,677 NZD to $15,053 NZD

B+
Cheapest Retailer
-
$6,677 NZD
HK$29,400 HKD
B+
Retailer 2
-
$7,684 NZD
$4,331 USD
View
B+
Retailer 3
-
$7,850 NZD
$4,424 USD
View
B+
Retailer 4
-
$7,970 NZD
$4,492 USD
View
B+
Retailer 5
-
$8,305 NZD
$4,681 USD
View
Final sale: no returns
B+
Retailer 6
-
$8,463 NZD
$4,770 USD
View
B+
Retailer 7
-
$8,490 NZD
SGD 6,466 SGD
View
B+
Retailer 8
-
$8,819 NZD
£3,914 GBP
View
B+
Retailer 9
-
$8,999 NZD
$5,072 USD
View
B+
Retailer 10
-
$8,999 NZD
$5,072 USD
View
B+
Retailer 11
-
$8,999 NZD
$5,072 USD
View
B+
Retailer 12
-
$9,256 NZD
£4,108 GBP
View
B+
Retailer 13
-
$9,270 NZD
$5,224 USD
View
B+
Retailer 14
-
$10,140 NZD
€5,443 EUR
View
B
Retailer 15
-
$10,385 NZD
$5,853 USD
View
B
Retailer 16
-
$11,063 NZD
ZAR 100,727 ZAR
View
B
Retailer 17
-
$14,334 NZD
£6,361 GBP
View
Most Expensive
B
NZ Jewellers
b1e3832e-6607-4c7c-8ab6-d32f401f6ec3 · Oct 30
$15,053 NZD
$8,484 USD
View
17 more retailers have this diamond
Prices start from $6,677 NZDSave up to $8,376 NZD

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+
1.51ct Round
$6,677 NZD