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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 $6,709 NZD
$3,781 USD
As of October 31, 2026
Save $8,627 NZD (56%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $15,335 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 very-good cut grade and certified by GIA 1549280379. Listed at 24 retailers as of October 30, 2026, with prices from $6,709 to $15,335, a $8,627 spread on the same certified stone. NZ Jewellers lists it at $15,335. 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

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 31
Current: $15,335 NZD|Low: $6,623 NZD|High: $15,335 NZD|Avg: $9,167 NZD
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$6,709 NZD
Retailer 21$6,859 NZD
Retailer 22$7,101 NZD
Retailer 23$7,246 NZD
Retailer 8$7,298 NZD
Retailer 12$7,669 NZD
Retailer 11$7,842 NZD
Retailer 3$7,860 NZD
Retailer 9$8,307 NZD
Retailer 14$8,307 NZD
Retailer 16$8,307 NZD
Retailer 4$8,907 NZD
Retailer 5$8,907 NZD
Retailer 2$9,095 NZD
Retailer 24$9,191 NZD
Retailer 17$9,300 NZD
Retailer 18$9,431 NZD
Retailer 15$9,585 NZD
Retailer 13$9,755 NZD
Retailer 7$10,121 NZD
Retailer 10$10,669 NZD
Retailer 20$11,271 NZD
Retailer 19$14,604 NZD
NZ Jewellers$15,335 NZD

25 data points across 24 retailers

24 retailers$6,709 NZD to $15,335 NZD

A
Cheapest Retailer
-
$6,709 NZD
$3,781 USD
A
Retailer 2
-
$6,859 NZD
HK$30,200 HKD
View
A
Retailer 3
-
$7,101 NZD
$4,002 USD
View
A
Retailer 4
-
$7,246 NZD
$4,084 USD
View
A
Retailer 5
-
$7,298 NZD
$4,113 USD
View
B+
Retailer 6
-
$7,669 NZD
$4,322 USD
View
Final sale: no returns
A
Retailer 7
-
$7,842 NZD
$4,420 USD
View
A
Retailer 8
-
$7,860 NZD
$4,430 USD
View
B+
Retailer 9
-
$8,307 NZD
$4,682 USD
View
A
Retailer 10
-
$8,307 NZD
$4,682 USD
View
A
Retailer 11
-
$8,307 NZD
$4,682 USD
View
B+
Retailer 12
-
$8,907 NZD
$5,020 USD
View
A
Retailer 13
-
$8,907 NZD
$5,020 USD
View
A
Retailer 14
-
$9,095 NZD
£4,036 GBP
View
A
Retailer 15
-
$9,191 NZD
$5,180 USD
View
Retailer 16
-
$9,300 NZD
A$8,064 AUD
View
Price last confirmed 23 days ago
B+
Retailer 17
-
$9,431 NZD
£4,185 GBP
View
B+
Retailer 18
-
$9,585 NZD
$5,402 USD
View
B+
Retailer 19
-
$9,755 NZD
€5,236 EUR
View
Retailer 20
-
$10,121 NZD
$5,704 USD
View
Price last confirmed 10 days ago
B+
Retailer 21
-
$10,669 NZD
$6,013 USD
View
B+
Retailer 22
-
$11,271 NZD
ZAR 102,624 ZAR
View
B
Retailer 23
-
$14,604 NZD
£6,481 GBP
View
Most Expensive
B
NZ Jewellers
3e2f5f46-1ce4-4305-949f-1309faa1ab4c · Oct 30
$15,335 NZD
$8,643 USD
View
23 more retailers have this diamond
Prices start from $6,709 NZDSave up to $8,627 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.

A
1.51ct Round
$6,709 NZD