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Round|Natural|GIA

1.55ct M SI1 Round Natural Diamond

GD • M/SI1 • GIA 6127528766

Certificate GIA 6127528766

Diamond specifications and retailer prices

From $8,069 NZD
As of November 4, 2026
Save $3,220 NZD (29%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $11,289 NZD at Cape Diamonds · As of November 5, 2026
View at Cape Diamonds

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 6127528766. Listed at 7 retailers as of November 4, 2026, with prices from $8,069 to $11,289, a $3,220 spread on the same certified stone. Cape Diamonds lists it at $11,289. 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

1.55
Carat
M
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle37.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6127528766
Dimensions7.17 × 7.20 × 4.69 mm
L/W Ratio1.00
Key to symbols
Feather, Crystal, Indented Natural
Top View
7.17 mm7.20 mm1.55 ctM / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6127528766
Side View
Table 59.0%Crown 37.5°Girdle: STK-THKPavilion 41.8°Culet: NoneDepth 65.3%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $11,289 NZD|Low: $8,069 NZD|High: $11,373 NZD|Avg: $9,519 NZD|+1.4%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 5$8,069 NZD
Retailer 4$8,599 NZD
Retailer 3$9,816 NZD
Retailer 2$10,074 NZD
Cape Diamonds$11,289 NZD

39 data points across 5 retailers

7 retailers$8,069 NZD to $11,289 NZD

B
Cheapest Retailer
-
$8,069 NZD
B
Retailer 2
-
$8,599 NZD
View
B
Retailer 3
-
$8,690 NZD
View
C
Retailer 4
-
$9,522 NZD
View
C
Retailer 5
-
$9,816 NZD
View
C
Retailer 6
-
$10,074 NZD
View
Most Expensive
C
Cape Diamonds
cert_6127528766 · Nov 5
$11,289 NZD
ZAR 102,521 ZAR
View
6 more retailers have this diamond
Prices start from $8,069 NZDSave up to $3,220 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
1.55ct Round
$8,069 NZD